摘要
试验分析了50 t LF精炼渣(FeO)、(MnO),R,(CaO)/[(Al_2O_3)(SiO_2)]和(S)的控制对[O]指数、硫分配比和Mn/S的影响。结果表明,当(FeO+MnO)=12%,碱度R值1.5~2.0,(CaO)/[(Al_2O_3)(SiO_2)]=1.5~2.0,平均硫分配比L_S为4.6,Mn/S值4.3~4.7时,铸态夹杂物为球形Ⅰ类硫化物和部分沿晶界分布的球形硫化物,轧制钢材未发现B、C类夹杂,达到了较好的控制钢中氧化物夹杂和低脱硫率的冶金效果。
The effect of control of 50 t LF refining slag(FeO),(MnO),R,(CaO) /[(Al_2O_3)(SiO_2)]and(S) on[O]index,sulfur partition ratio and Mn/S has been tested and analyzed.Results show that as(FeO + MnO) = 12%,basicity R 1.5~2.0,(CaO)/[(Al_2O_3)(SiO_2)]=1.5~2.0,average sulfur partition ratio L_S 4.6,Mn/S =4.3~4.7,the as-cast inclusions in steel is spheroid Ⅰ series sulfide and partial along grain-boundary distributed spheroid sulfide,and the B and C series inclusions do not found in rolled products to get better control of oxides inclusions in steel and metallurgy effect of low desulphurization ratio.
出处
《特殊钢》
北大核心
2016年第1期60-63,共4页
Special Steel
关键词
硫易切削钢
精炼渣
FEO
MNO
夹杂物
Material Index Sulfur Free Cutting Steel
Refining Slag
FeO
MnO
Inclusions